Trace substance detection device and detection method thereof

Abstract

The invention provides a trace substance detection device and a detection method thereof. The trace substance detection device comprises a test platform, which is used for horizontally holding a containing container, which contains liquid to be detected; a light source, which emits light irradiating the liquid to be detected in the containing container; a spectrometer, which receives the light passing through the container and carries out spectral analysis on the light; a power supply, which is electrically connected with the spectrometer and is used for supplying the required power; a dilution unit, which is used for adding a specific proportion of diluent into the liquid to be detected to form diluted liquid to be measured; and a microprocessor, wherein when the containing container contains the liquid to be detected, the light passes through the liquid to be detected, and a first oscillogram is formed through analysis of the spectrometer; when the containing container contains the diluted liquid to be detected, light passes through the diluted liquid to be detected, and a second oscillogram is formed through analysis of the spectrometer; and the microprocessor compares the difference between the first oscillogram and the second oscillogram and judges whether the liquid to be detected has a trace substance.

Description

technical field [0001] The invention relates to a trace substance detection device and a detection method thereof, in particular to a method capable of detecting alien residues, foreign residues, pollutant residues, and residues in a solution to be tested. A detection device and detection method for trace substances such as pesticide residues. Background technique [0002] The detection method of trace substances is widely used, for example, it has a wide range of applications in various aspects such as medical treatment, biochemistry, chemistry or agriculture, especially in the detection of specific trace foreign substances, foreign substances, pollutants or There is a great demand for the detection methods of pesticide residues. [0003] Generally speaking, it is very common for farmers to apply pesticides to crops in order to eliminate pests and increase the yield of agricultural products. Based on food safety considerations, all countries in the world have established p...

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Problems solved by technology

[0005] Although the above-mentioned QuEChERS pesticide residue detection method is better than the traditional method, it still has many shortcomings, including a lot of time spent on sample pretreatment steps, and the steps of the entire QuEChERS program are very cumbersome and complicated, and it takes at least 2 hours, making QuEChERS This method is quite time-consuming and laborious, which not only slows down the entire pesticide inspection process, but also fails to obtain inspection results quickly.

In addition, the QuEChERS method is very expensive

For farmers, the burden of testing costs is very heavy; in addition, agricultural products must be tested for pesticide residues in many stages such as planting and harvesting. The timeliness, simplicity and cost of the testing procedures are very important and need to be considered The above-mentioned QuEChERS method cannot take into account the timeliness, simplicity and cost of detection, and it cannot meet the needs of the market.

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